Epdm production and reformation process for rubber products

ABSTRACT

The invention constituting the subject matter of this application is related to the production method and process regarding any and all products created by forming the EPDM rubber including a mixture of ethylene, propylene and diene by using heat and particularly the seal of the door gasket, which is a part of the washing machines.

The invention constituting the subject matter of this Application is related to the production method and process regarding any and all products created by shaping the EPDM rubber including a mixture of ethylene, propylene and diene by using heat and particularly the seal of the door gasket, which is a part of the washing machines.

This method is the process enabling the controlled deformation of the materials for facilitating the transportation to the relevant location, the elimination of the deformation by heating the goods in a reformation furnace after the transportation and the restoration of the goods after the transportation to their original forms as of just after they come out of the mould.

Under the known technical conditions, the products produced by giving form to EPDM (a mixture of ethylene, propylene and diene) rubber by using heat (particularly the seals of the door gaskets) are packaged and transported in their original forms after their manufacturing. Our invention also constitutes a development in the method of packaging.

Seals of door gaskets are specifically stowed in boxes with a capacity up to 54 seals; and only 32 boxes (1,728 seals) can be loaded to a container of 65 cubic meters (in high cube type). Due to such loading, the packages are not rigid, given that the materials are not rigid. The packages are damaged due to many reasons during the transportation and a significant portion of the goods become outworn since they are not rigid. Our invention provides rigidity in packaging and transportation; and this decreases the number of products reduced by ullage, and facilitates the relevant processes.

Under the known technical conditions, the stowage of the goods requires a wide space and accordingly increases the transportation costs. Our invention prevents this problem; and accordingly decreases the transportation costs as may be expected.

The purpose of our invention is to improve the packaging and the transportation processes regarding any and all kinds of goods given form by heating EPDM, rubber including a mixture of ethylene, propylene and diene (particularly the seal of the door gaskets, which is a part of the washing machines); and prevent the deformation of the goods, which become rigid, during the transportation.

The process of producing and reshaping EPDM rubber products are explained below:

phr EPDM 100,000 Precipitated silica 30,000 Kaolin 100,000 Paraffinic oil 90,000 Struktol EM 16 1,500 Si 69 4,000 Zinc Oxide 5,000 Stearic Acid 1,250 PEG 3,000 Titanium Dioxide 10,000 Blue Pigment 1,000 N 550 0,200 Sulphur 80 1,400 CBS 1,750 ZDBC 1,750 ZDEC 1,750 TMTD 1,250

The most important basic component of our invention is the reformation of the products (particularly the seals of the door gaskets) manufactured by using the vulcanization (hardening the rubber) of EPDM rubber, which includes a mixture of ethylene, propylene and diene, from their final ready-to-use forms (Drawing 1) to a new form (Drawing 2), the transportation of such products in such new form; and the restoration of such products to their original form by using their thermal memory (reformation) at the place where such products are to be used.

The goods are produced by mixing the materials, whose formulas are given in the chart above, heating them in furnace and vulcanizing them.

The goods produced are deformed under control for packaging and transportation; and these products deformed under control are restored to their original forms by using the reforming furnaces.

Any closed furnace may be used for this reformation process.

The products which are created by heating EPDM rubber including a mixture of ethylene, propylene and diene and whose forms (particularly those which are round or ellipsoid) are finalized (Drawing 1) are bended (Drawing 2) and packaged in this later form (Drawing 3).

The products packaged and transported after being subject to a controlled deformation without using heat, are restored to their original forms after being processed in a reshaping furnace.

The products are restored to their original forms after being treated at 300-375 F.° for a period of 90 to 180 seconds (Please see Drawing 1.).

DETAILS OF THE DRAWINGS

Drawing 1—The produced and natural form of the products

Drawing 2—The controlled deformed form of the products

Drawing 3—The product packaging sample 

1- The invention is the production and reformation process for EPDM rubber products, during which the goods produced, reformed and transported and then restored to their original forms. 2- According to Demand 1, the invention is the production and reformation process for EPDM rubber products; and it is necessary to use EPDM, Precipitated Silica, Kaolin, Paraffinic Oil, Struktol EM 16, Si 69, Zinc Oxide Stearic Acid PEG, Titanium dioxide, Blue pigment, N 550, Sulphur 80, CBS, ZDBC, ZDEC and TMTD. 3- According to Demands 1 and 2, the invention is giving form to the products without using heat (Please see Drawing 2). 4- According to Demands 1 and 2, the invention is a process aiming at the packaging of the products after controlled deformation (Please see Drawing 3). 5- According to Demands 1 and 2, the intervention is a process aiming at restoring the products to their original forms by treating them at 300-375 F.° for a period of 90 to 180 seconds in forming furnaces by taking the goods out of their packages after the transportation. 